Heavy Duty Sausage-Style Caulking Gun 15" Aluminum (1 pc)

Features : 
• High density sintered thrust block
• Heat treated pressure rod
• Reinforced 1.5mm aluminum cartridge holder (twistable)
• Reinforced connecting mechanism with bearing outside the rivet
• Aluminum handle with steel trigger
• for 310ml cartridge, 300, 400 & 600ml sausage
• Auto flow stop system AFS
• Enhanced SST
• Pushing power 4000N
• Trust ratio 16:1
• Viscosity 4,5,6